Lamp-burner.



J. W. lVIcCRONE.

LAMP BURNER.

- APPLICATION FILEDNOV. I4. 1916.

Patented Jan. 8, 1918.

WITNESSES I W'NW' ATTORNEY ED STA JOHN w mesons, or MULDOON, crazies,

IaAMP-BURNER.

Specificati on of Letters Patent.

Patented Jan, 8, 1 918,.

gppliqa tion filed November 14, 131( Serial No. 131,294.

To all whom it may concern: 7

Be it known that I, JOHN V. McCRoNE, a Citizen of the United States,residing at. Muldoon, in the county of Fayette and State of Texas, haveinventedcertain new and useful Improvements in Lamp-Burners, of whichthe following is a specification.

This invention relates to lamp burners.

' Que o h m n i c of h in en ion i to pro ide p bu n r o mple con.-struction and operation having means for supplying air to the lamp flameso as to in-v sure proper combustion and a maximum of light produced bythe flame.

further object is to provide means for directing a current of air upwardalong the wick tube into intimate contact with the flame, such meansbeing provided with de? vices for maintaining it in proper positionrelative to the wick tube. A further ob ject. is to provide an airconducting and supplying-'- means wh ch may be produced at very smallcost and may be quickly and easily applied to a lamp burner of standardconstruction. Still further objects will ap pear from the; detaileddescription.-

In the drawings:

Figure 1 is, a top. plan view of a lamp burner constructed in accordancewith my inv ntion with the flame cone turned back.

Fig; 2 is a detailed front perspective viewof he air conducting casing,

Fig is} an underneath view ofthe air conducting casing. and V Fig. 4 isa detail plan view of the blank frorn'wliich the airconducting casing isformed. I,

The burner is provided W-iththe usual chimney gallery 1 and resilientchimney securing arms 2. The wick tube 3 extends upward above theperforated dis-k4 lei-the usual manner, being positioned at the centerof the burner. This tube is formed from a sheet metal blank which isbent intoproper shape and has its adiacent edges secured together by aseam or bead-joint 5. The wick may be moved vertically through the wicktube 3 by means of the usual star wheels 6 operated by the wick ratchet7. The burner so far described is of a standard and well knownconstruction.

Mounted about the wick tube 3 is a sheet metal casing or duct 8. Thiscasingis of approximately elliptical shape and is, when in operativeposition, concentric with the wick tube; In producing the casing 8 I rso -m. bl k su h a s o n in F g-'4; of the drawings having the centralupwardlyarched portion 8 and the two end upwardly arched portions 8*,and the intermediate downwardly arched portions 8, at, its; upper edge,At its lower edge this blank is provided, at its longitudinal center,with an integral downwardly directed tab having a central rectangularrecess; 10 and, a ea e th a t 11- he t o bs ll are so related that, whenthe end strips 12; of the blank are secured together by a bent or foldedjoint, as at 12 in Fig. 2 of the drawings, they produce a tabdiametrically opos a d s m a to, he tab, 9', t t o. re: cesses 3v e ngco tig ou o f rec ss. im ar o the r ce s 10-, T is. blank fun han Pro id, a sho t d s anc bove its lower edge, and at its longitudinal center,with a plurality of spaced apertures, 14 near each end, with similarapertures 14 Th s: b ank ben into. the orm sho n in Figs. 1 and 2 of thedrawings, having its adjacent edges secured by a folded joint as at 12in Fig.2, The two opposite tabs at the sides of the casing orduct formedare thenturned inward at right angles. These two tabs; are of suchlength as to fitsnugly against the side faces of the wick; tube, the ecs f o e of the. tabs fi g a t the folded joint; 5 of the wicktub 3, as,in Fig, lof the drawings. This serves to Secure the air duct in properadjustmen both trans; versely and longitudinally relatively to the wicktube. A cut or slit is provided the blank from which casing 8, formed,adjacent; each side of tab 9, and the inner side Of each tab 11, By thismeans, when the tabs are folded inward their under-faces are flush withthe lower edge of the casing so that, when the casingis in operativeposition, its lower edge will rest snugly againstthe upper face ofperforated disk 4. In this position the tabs serve to cover or close theperforations through disk 4 at the sides of the wick tube 3 so as toprevent air from flowing upward through the disk along the sides of thewick tube, the air necessary to cool this tube being supplied throughthe perforations 14 and 14 of casing 8.

The air duct or casing 8 causes the air supplied through the perforateddisk 4 upon which it rests at each end thereof, to pass upward towardthe upper edge of the casing where it flows inward directly and towardthe wick tube 3 mixing thoroughly am aware,

with the oil vapor from the'wick. There-V sult of this mixing of the airand oil vapor by this means is the productioirot a very brilliant flameof great illuminating power with no increase in oil consumption, onaccount of the very complete combustion. of the oil vapor.

As will be noticed vfrom Fig. 2 of the drawings, the casing has itsupper side edges of arcuate shape and curving downwardly toward each endof the casing from the longitudinal center thereof. This results in theends 0]": the casing being somewhat lower than the center of the casingso that the lamp flame, in its endeavor to extract the,

maximuinainount of oxygen from the air, will tend to spread downwardfrom each end of the wick tube, thus producing a very broad roundedflame having a relatively large surface and capable of producing a largeamount of illumination.

A flame cap 16 is hingedly secured to the burner base as at 18; This capis provided with the usual transversely extending slot 19 for the flameand acts to insure a steady and clear flame and to supply air to theflame above the top of the wick, in the usual manner. In normal positionthis cap is secured over the wick tube 3 and'casing 8 by means of aspring hook or finger 20 which engages through a slot 21 formed in theburner base.

I am aware that it has been proposed to produce lamp burners having anair duct or casing mounted about the wick tube for supplying air to theflame but, so far as I it'has never been proposed to roduce a casingwhich is detachably mountedabout the wick tube and is provided withmeans-engaging with the tube for holding the casing in operativeposition, this casing being so constructed and shaped as to produceavery broad flame of maximum illuminating capacity.

\Vhat I claim is: r I -1. In a lamp burner, the combination of a wicktube provided at thecenter of one side with a vertically extending scam,and

Copies of this patent may be obtained for a casing mounted about thetube in spaced relation and concentric therewith provided, 50.

at the center of the lower edge of each side, with an integral inwardlyturned tab having a recess adapted to snugly receive the seam of thewick tube, the upper edge of each side of said casing being of arcuateshape and curving downwardly from the longitudinal center of the casingtoward the end of the casing. 1 a

2. In a lamp burner, the combination of a wick tube provided at thecenter of one side with a vertically extending seam, and a casingmounted about the tube in spaced relation and concentric therewithprovided, at the center of the lower edge of each side wall, with anintegral inwardly extending tab having a recess inits inner end adaptedto snuglyengage about the seam of the wicktube, the casing being furtherprovided with a plurality of spaced apertures in each side and havingthe upper edge of each side wall of arcuate shape and curved downwardlyfrom the longitudinal center of the casing toward each end of thecasing;

3. An attachment for lamp burners comprising a casing adapted to bemounted in concentric space relation to a wick tube hav ing at thecenter of the lower edge ot'each side wall an inwardly extending tabprovided with a recess in its inner end adapted to snuglyreceive theseam of a wick tube, the under faces of said tabs being flush with thelower edge of the casing whereby the lower end of'said casing will restdirectly on the gallery of a lamp burner when in operative position,said casing having the upper edge of each side wall of arcuatei shapeand curved downwardly from the longitudinal center toward each end ofthe casing. v i I In testimony whereof I affix my signature in presenceof two witnesses.

Witnesses:

W. T. Jones, \V. P. IRY,

five cents each. by a'ddressingthe Commissioner of Patents,WashingtoinD. 0.?

JOHN w. iuccnonni

